180979213 has 4 divisors (see below), whose sum is σ = 183528288. Its totient is φ = 178430140.

The previous prime is 180979189. The next prime is 180979219. The reversal of 180979213 is 312979081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 180979213 - 2⁵ = 180979181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180979219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1274431 + ... + 1274572.

It is an arithmetic number, because the mean of its divisors is an integer number (45882072).

Almost surely, 2^180979213 is an apocalyptic number.

It is an amenable number.

180979213 is a deficient number, since it is larger than the sum of its proper divisors (2549075).

180979213 is an equidigital number, since it uses as much as digits as its factorization.

180979213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549074.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 180979213 is about 13452.8514821208. The cubic root of 180979213 is about 565.6436270862.

It can be divided in two parts, 18097 and 9213, that multiplied together give a palindrome (166727661).

The spelling of 180979213 in words is "one hundred eighty million, nine hundred seventy-nine thousand, two hundred thirteen".